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. 2017 May 3;17(5):1015. doi: 10.3390/s17051015

Figure 2.

Figure 2

Fabrication process of the FBAR-based coagulation monitoring sensor. (a) Coating of the Si3N4 layer; (b) etching of the initial cavity; (c) deposition of ZnO film; (d) evaporation of electrodes; (e) releasing the piezoelectric stack; (f) spin-coating of the polyethylene layer.